[ALSA] semaphore -> mutex (ISA part)
[linux-2.6.git] / sound / isa / gus / gus_synth.c
1 /*
2  *  Routines for Gravis UltraSound soundcards - Synthesizer
3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4  *
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19  *
20  */
21
22 #include <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/time.h>
25 #include <sound/core.h>
26 #include <sound/gus.h>
27 #include <sound/seq_device.h>
28
29 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
30 MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards - Synthesizer");
31 MODULE_LICENSE("GPL");
32
33 /*
34  *
35  */
36
37 static void snd_gus_synth_free_voices(struct snd_gus_card * gus, int client, int port)
38 {
39         int idx;
40         struct snd_gus_voice * voice;
41         
42         for (idx = 0; idx < 32; idx++) {
43                 voice = &gus->gf1.voices[idx];
44                 if (voice->use && voice->client == client && voice->port == port)
45                         snd_gf1_free_voice(gus, voice);
46         }
47 }
48
49 static int snd_gus_synth_use(void *private_data, struct snd_seq_port_subscribe *info)
50 {
51         struct snd_gus_port * port = private_data;
52         struct snd_gus_card * gus = port->gus;
53         struct snd_gus_voice * voice;
54         unsigned int idx;
55
56         if (info->voices > 32)
57                 return -EINVAL;
58         mutex_lock(&gus->register_mutex);
59         if (!snd_gus_use_inc(gus)) {
60                 mutex_unlock(&gus->register_mutex);
61                 return -EFAULT;
62         }
63         for (idx = 0; idx < info->voices; idx++) {
64                 voice = snd_gf1_alloc_voice(gus, SNDRV_GF1_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port);
65                 if (voice == NULL) {
66                         snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
67                         snd_gus_use_dec(gus);
68                         mutex_unlock(&gus->register_mutex);
69                         return -EBUSY;
70                 }
71                 voice->index = idx;
72         }
73         mutex_unlock(&gus->register_mutex);
74         return 0;
75 }
76
77 static int snd_gus_synth_unuse(void *private_data, struct snd_seq_port_subscribe *info)
78 {
79         struct snd_gus_port * port = private_data;
80         struct snd_gus_card * gus = port->gus;
81
82         mutex_lock(&gus->register_mutex);
83         snd_gus_synth_free_voices(gus, info->sender.client, info->sender.port);
84         snd_gus_use_dec(gus);
85         mutex_unlock(&gus->register_mutex);
86         return 0;
87 }
88
89 /*
90  *
91  */
92
93 static void snd_gus_synth_free_private_instruments(struct snd_gus_port *p, int client)
94 {
95         struct snd_seq_instr_header ifree;
96
97         memset(&ifree, 0, sizeof(ifree));
98         ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE;
99         snd_seq_instr_list_free_cond(p->gus->gf1.ilist, &ifree, client, 0);
100 }
101  
102 static int snd_gus_synth_event_input(struct snd_seq_event *ev, int direct,
103                                      void *private_data, int atomic, int hop)
104 {
105         struct snd_gus_port * p = private_data;
106         
107         snd_assert(p != NULL, return -EINVAL);
108         if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE &&
109             ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) {
110                 snd_gus_sample_event(ev, p);
111                 return 0;
112         }
113         if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM &&
114             ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) {
115                 if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) {
116                         snd_gus_synth_free_private_instruments(p, ev->data.addr.client);
117                         return 0;
118                 }
119         }
120         if (direct) {
121                 if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) {
122                         snd_seq_instr_event(&p->gus->gf1.iwffff_ops.kops,
123                                             p->gus->gf1.ilist,
124                                             ev,
125                                             p->gus->gf1.seq_client,
126                                             atomic, hop);
127                         return 0;
128                 }
129         }
130         return 0;
131 }
132
133 static void snd_gus_synth_instr_notify(void *private_data,
134                                        struct snd_seq_kinstr *instr,
135                                        int what)
136 {
137         unsigned int idx;
138         struct snd_gus_card *gus = private_data;
139         struct snd_gus_voice *pvoice;
140         unsigned long flags;
141         
142         spin_lock_irqsave(&gus->event_lock, flags);
143         for (idx = 0; idx < 32; idx++) {
144                 pvoice = &gus->gf1.voices[idx];
145                 if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) {
146                         if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) {
147                                 pvoice->sample_ops->sample_stop(gus, pvoice, SAMPLE_STOP_IMMEDIATELY);
148                         } else {
149                                 snd_gf1_stop_voice(gus, pvoice->number);
150                                 pvoice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
151                         }
152                 }
153         }
154         spin_unlock_irqrestore(&gus->event_lock, flags);
155 }
156
157 /*
158  *
159  */
160
161 static void snd_gus_synth_free_port(void *private_data)
162 {
163         struct snd_gus_port * p = private_data;
164         
165         if (p)
166                 snd_midi_channel_free_set(p->chset);
167 }
168
169 static int snd_gus_synth_create_port(struct snd_gus_card * gus, int idx)
170 {
171         struct snd_gus_port * p;
172         struct snd_seq_port_callback callbacks;
173         char name[32];
174         int result;
175         
176         p = &gus->gf1.seq_ports[idx];
177         p->chset = snd_midi_channel_alloc_set(16);
178         if (p->chset == NULL)
179                 return -ENOMEM;
180         p->chset->private_data = p;
181         p->gus = gus;
182         p->client = gus->gf1.seq_client;
183
184         memset(&callbacks, 0, sizeof(callbacks));
185         callbacks.owner = THIS_MODULE;
186         callbacks.use = snd_gus_synth_use;
187         callbacks.unuse = snd_gus_synth_unuse;
188         callbacks.event_input = snd_gus_synth_event_input;
189         callbacks.private_free = snd_gus_synth_free_port;
190         callbacks.private_data = p;
191         
192         sprintf(name, "%s port %i", gus->interwave ? "AMD InterWave" : "GF1", idx);
193         p->chset->port = snd_seq_event_port_attach(gus->gf1.seq_client,
194                                                    &callbacks,
195                                                    SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
196                                                    SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
197                                                    SNDRV_SEQ_PORT_TYPE_SYNTH,
198                                                    16, 0,
199                                                    name);
200         if (p->chset->port < 0) {
201                 result = p->chset->port;
202                 snd_gus_synth_free_port(p);
203                 return result;
204         }
205         p->port = p->chset->port;
206         return 0;
207 }                                                
208
209 /*
210  *
211  */
212
213 static int snd_gus_synth_new_device(struct snd_seq_device *dev)
214 {
215         struct snd_gus_card *gus;
216         int client, i;
217         struct snd_seq_port_subscribe sub;
218         struct snd_iwffff_ops *iwops;
219         struct snd_gf1_ops *gf1ops;
220         struct snd_simple_ops *simpleops;
221
222         gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
223         if (gus == NULL)
224                 return -EINVAL;
225
226         mutex_init(&gus->register_mutex);
227         gus->gf1.seq_client = -1;
228         
229         /* allocate new client */
230         client = gus->gf1.seq_client =
231                 snd_seq_create_kernel_client(gus->card, 1, gus->interwave ?
232                                              "AMD InterWave" : "GF1");
233         if (client < 0)
234                 return client;
235
236         for (i = 0; i < 4; i++)
237                 snd_gus_synth_create_port(gus, i);
238                 
239         gus->gf1.ilist = snd_seq_instr_list_new();
240         if (gus->gf1.ilist == NULL) {
241                 snd_seq_delete_kernel_client(client);   
242                 gus->gf1.seq_client = -1;
243                 return -ENOMEM;
244         }
245         gus->gf1.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
246
247         simpleops = &gus->gf1.simple_ops;
248         snd_seq_simple_init(simpleops, gus, NULL);
249         simpleops->put_sample = snd_gus_simple_put_sample;
250         simpleops->get_sample = snd_gus_simple_get_sample;
251         simpleops->remove_sample = snd_gus_simple_remove_sample;
252         simpleops->notify = snd_gus_synth_instr_notify;
253
254         gf1ops = &gus->gf1.gf1_ops;
255         snd_seq_gf1_init(gf1ops, gus, &simpleops->kops);
256         gf1ops->put_sample = snd_gus_gf1_put_sample;
257         gf1ops->get_sample = snd_gus_gf1_get_sample;
258         gf1ops->remove_sample = snd_gus_gf1_remove_sample;
259         gf1ops->notify = snd_gus_synth_instr_notify;
260
261         iwops = &gus->gf1.iwffff_ops;
262         snd_seq_iwffff_init(iwops, gus, &gf1ops->kops);
263         iwops->put_sample = snd_gus_iwffff_put_sample;
264         iwops->get_sample = snd_gus_iwffff_get_sample;
265         iwops->remove_sample = snd_gus_iwffff_remove_sample;
266         iwops->notify = snd_gus_synth_instr_notify;
267
268         memset(&sub, 0, sizeof(sub));
269         sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM;
270         sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
271         sub.dest.client = client;
272         sub.dest.port = 0;
273         snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub);
274
275         return 0;
276 }
277
278 static int snd_gus_synth_delete_device(struct snd_seq_device *dev)
279 {
280         struct snd_gus_card *gus;
281
282         gus = *(struct snd_gus_card **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
283         if (gus == NULL)
284                 return -EINVAL;
285
286         if (gus->gf1.seq_client >= 0) {
287                 snd_seq_delete_kernel_client(gus->gf1.seq_client);      
288                 gus->gf1.seq_client = -1;
289         }
290         if (gus->gf1.ilist)
291                 snd_seq_instr_list_free(&gus->gf1.ilist);
292         return 0;
293 }
294
295 static int __init alsa_gus_synth_init(void)
296 {
297         static struct snd_seq_dev_ops ops = {
298                 snd_gus_synth_new_device,
299                 snd_gus_synth_delete_device
300         };
301
302         return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_GUS, &ops,
303                                               sizeof(struct snd_gus_card *));
304 }
305
306 static void __exit alsa_gus_synth_exit(void)
307 {
308         snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_GUS);
309 }
310
311 module_init(alsa_gus_synth_init)
312 module_exit(alsa_gus_synth_exit)